Methods of analysis of geophysical data during increased solar activity

NCUIR > College of Earth Sciences > DEPARTMENT OF SPACE SCIENCE AND ENGINEERING > journal & Dissertation > Item 987654321/102253

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/102253

Title:	Methods of analysis of geophysical data during increased solar activity
Authors:	狄米奇;Mandrikova, O. V.;Polozov, Yu. A.;Solovev, I. S.;Fetisova (Glushkova), N. V.;Zalyaev, T. L.;Kupriyanov, M. S.;Dmitriev, A. V.
Contributors:	地球科學學院太空科學與工程學系
Keywords:	Algorithms;Analysis;Applied Problems;Computer Science;Cosmic rays;Disturbances;Electromagnetism;Geomagnetism;Image Processing and Computer Vision;Ionosphere;Ionospheric disturbances;Magnetic storms;Mathematical models;Methods;Noise;Pattern Recognition;Phases;Research methodology;Solar flares;Storms;Studies;Time series;Wavelet transforms
Date:	2016-04-01
Issue Date:	2026-04-23 11:05:01 (UTC+8)
Publisher:	Pleiades Publishing;Moscow: Pleiades Publishing
Abstract:	摘要： This work is directed at creation of methods of study of the processes in the ionospheric–magnetospheric system during increased solar and geomagnetic activity. Method of modeling and analysis of the parameters of the ionosphere, which allows prediction of the data and identification of the anomalies during the ionospheric disturbances, are given. Computational solutions for determination and estimation of the geomagnetic disturbances are described. Method of determination of the anomalous changes in the time course of cosmic rays, which allows qualitative estimations of the moments of their origination, duration, and intensity, is suggested. On the basis of the methods elaborated, the data on the periods of strong and moderate magnetic storms are complexly analyzed. Sharp oscillations in the electron density of the ionosphere with positive and negative phases, which originate in the regions analyzed during an increase in geomagnetic activity, are distinguished. Positive phases of the ionospheric disturbances from several hours to one and a half days long were formed before the beginning of the magnetic storms. At the moments of the increase in the electron concentration, a local increase is observed in the level of cosmic rays (several hours before the magnetic storms) that supported the solar nature of these effects. During the strongest geomagnetic disturbances, the electron concentration in the ionosphere decreased significantly and led to prolonged negative phases of ionospheric storms, which coincided with the decrease in the level of cosmic rays (a Forbush decrease). 其他題名： Pattern Recognit. Image Anal 出版者： Moscow: Pleiades Publishing 出版日期： 2016-04 出處： Pattern recognition and image analysis, 2016-04, Vol.26 (2), p.406-418 資源來源： ABI/INFORM Collection (NTUSG) 版權： Pleiades Publishing, Ltd. 2016 識別號： ISSN: 1054-6618 識別號： EISSN: 1555-6212 識別號： DOI: 10.1134/S1054661816020103
Appears in Collections:	[DEPARTMENT OF SPACE SCIENCE AND ENGINEERING] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	16	View/Open

社群 sharing

Loading...